How do the water-bill tranches work?

Households have four progressive quarterly tranches: up to 25 m³ at the base rate, 26–55 m³ at ×3.25, 56–82 m³ at ×5.5 and beyond 82 m³ at ×6.5. The same tranches apply to both the water and the sanitation halves of the bill.

Why does the tariff differ between wilayas?

Executive decree 05-13 splits the country into tariff zones: DZD 6.30/m³ for water (2.35 sanitation) in the Algiers, Oran and Constantine zones; 6.10/2.20 in the Chlef zone; 5.80/2.10 in the Ouargla (South) zone. Picking your wilaya applies its zone automatically.

Does the bill differ between ADE, SEAAL and SEOR?

No. The tariff is national (decree 05-13) whichever operator serves you: SEAAL in Algiers and Tipaza, SEOR in Oran, SEACO in Constantine, SEATA in Annaba and El Tarf, and ADE everywhere else. The tariff zone changes, not the operator.

Which levies are added to the bill?

Three levies for the national water funds: the DZD 3/m³ management levy, and the water-quality and water-saving levies of 4% each on the water consumption amount excluding the fixed charge (2% in the southern wilayas), plus 9% VAT on the whole pre-tax total.

How are administrations and businesses billed?

Category II (administrations, artisans, services) pays a single tranche at ×5.5 on the whole volume; category III (industrial and tourism units) at ×6.5 — no progressive tranches.

When is stamp duty added?

Only for cash payment at the agency or post office: DZD 1 per 100-DZD slice or fraction, minimum DZD 5. Electronic payment is exempt.

Is this tariff really unchanged since 2005?

Yes. The decree 05-13 tariff of 9 January 2005 has never been revised through 2026 despite recurring debates — one of the lowest water prices in the world.

Why might the result differ from my bill?

Your bill may carry previous dues, a regularization after an estimated reading, or tiny VAT rounding quirks at some operators. The fixed charges (240 and 60 DZD) are uniform operator practice, not set by the decree itself.

Utility-bill calculators

Water & sanitation bill calculator

Estimate your quarterly water bill (ADE, SEAAL, SEOR…) on the decree 05-13 tranches and your wilaya's tariff — every levy and VAT included.

Per official rate schedules · 2026

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Quarterly water consumption (m³)

The difference between two meter readings — the bill's “Consumption” box

Wilaya

Subscription category

Payment method

Amount due

836DA

Water60%

Sanitation19%

Taxes & levies21%

Water, pre-tax (incl. fixed charge)500DA

Tranche 1: ≤25 m³ (×1)158DA

Tranche 2: 26–55 m³ (×3.25)102DA

Water fixed charge240DA

Sanitation, pre-tax (incl. fixed charge)157DA

Sanitation fixed charge60DA

Total pre-tax657DA

VAT 9%59DA

Management levy (DZD 3/m³)90DA

Water-quality levy10DA

Water-saving levy10DA

Cash-payment stamp9DA

Amount due836DA

Monthly average279DA

hsabet.com

SEAAL — Algiers & Tipaza waterYour wilaya's operator — one national tariff (decree 05-13)Official site

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How it works

Pick your wilaya, enter the consumption in m³ and the subscription category.
The executive-decree 05-13 zone tariff applies to both the water and sanitation parts over progressive tranches, plus the two fixed charges.
The management, water-quality and water-saving levies, 9% VAT and the cash stamp are added exactly like the real bill.

Sources: executive decree no. 05-13 (OJ no. 05, 2005) — turnover-tax code (art. 23) — Official Journal (JORADP).

Journal Officiel — Loi de Finances (opens in a new tab)

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This calculator reproduces the quarterly water & sanitation bill as issued by ADE, SEAAL, SEOR and the other operators: your wilaya's base tariff per executive decree 05-13 (unchanged since 2005), the households' progressive tranches, the fixed charges, then the management, water-quality and water-saving levies and 9% VAT.